CN108530251A - Device and method for gaseous feed stream of the film infiltration processing comprising methane and carbon dioxide - Google Patents
Device and method for gaseous feed stream of the film infiltration processing comprising methane and carbon dioxide Download PDFInfo
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- CN108530251A CN108530251A CN201810170651.3A CN201810170651A CN108530251A CN 108530251 A CN108530251 A CN 108530251A CN 201810170651 A CN201810170651 A CN 201810170651A CN 108530251 A CN108530251 A CN 108530251A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 128
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 30
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 25
- 230000008595 infiltration Effects 0.000 title claims abstract description 8
- 238000001764 infiltration Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 19
- 230000014759 maintenance of location Effects 0.000 claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 13
- 238000004064 recycling Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 24
- 229960004424 carbon dioxide Drugs 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000003345 natural gas Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/225—Multiple stage diffusion
- B01D53/226—Multiple stage diffusion in serial connexion
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/225—Multiple stage diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/144—Purification; Separation; Use of additives using membranes, e.g. selective permeation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/05—Biogas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/46—Compressors or pumps
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/548—Membrane- or permeation-treatment for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Equipment the present invention relates to the gaseous feed stream (6) of methane and carbon dioxide is included at least for film infiltration processing to generate the gaseous stream (12) rich in methane, including:First film separation unit (1), it can receive gaseous feed stream and generate the first rich carbonated retention (7) for being rich in methane through object (4) and first, second film separation unit (2), it can receive the first retention (7) and generate the second rich carbonated retention (8) for being rich in methane through object (5) and second, gas gas injector (11), it can penetrate the pressure of object (4) by first and improve to 26 bars, more preferable 34 bars of pressure, and third film separation unit (3), it can receive the first transmission object (4) compressed in injector and generate retention (9) and third of the third rich in methane penetrates object (10) rich in CO2.
Description
At least gaseous stream containing methane and carbon dioxide being handled to generate richness for film infiltration the present invention relates to a kind of
The device and method of gaseous stream containing methane.
More particularly it relates to the purifying of biogas, it is therefore an objective to which production meets the specification of injection natural gas network
Biological methane.
Biogas is the gas that organic matter decomposes (anaerobic fermentation) generation during (also referred to as methanation) in the presence of anaerobic
Body.This may be a kind of natural decomposition-therefore can observed by marsh or city refuse landfill-but the production of biogas
Life is also likely to be by the waste in special purpose reactor (being known as methanation device (methanizer) or boiling vessel (digester))
Methanation caused by.
Since its main component-methane and carbon dioxide-biogas is a kind of potential greenhouse gases;Meanwhile in fossil
Under the increasingly rare background of the energy, it is also a kind of important sources of regenerative resource.
Biogas mainly contains methane (CH4) and carbon dioxide (CO2), and ratio depends on the mode obtained and changes,
But also water, nitrogen, hydrogen sulfide, oxygen and other micro organic compounds containing smaller ratio.
The ratio of organic substance depending on decomposition and technology used, each component is different;However, biogas is flat based on dry gas
Include 30% to 75% methane, 15% to 60% CO2,0% to 15% nitrogen, 0% to 5% oxygen and milligram ammonia
Close object.
Value is obtained by biogas in various ways.It can be processed near Workplace after slight processing and
The mixture (cogeneration of heat and power (cogneration)) of heat, electric power or both is provided;High carbon dioxide content reduces its heat
Value, improves compression and transportation cost, and limits the economic advantages for processing it to use nearby.
More thorough biogas purifying allows that biogas is more widely used;More specifically, the thorough purifying production of biogas
It has given birth to and has been purified to natural gas specification and the biogas of the substitute that can be used as the gas;Thus the biogas purified is " biological first
Alkane ".Therefore, biological methane utilizes the renewable part supplemental natural gas resource generated in region;It can be used for coming with fossil
The identical purposes of natural gas in source.It can supply natural gas network, group refueling station, and can also liquefy and with liquid
Change the storage of the forms such as natural gas (LNG).
The mode being worth by biological methane is determined according to local circumstance:Local energy resources demand is fired as biological methane
The option for expecting processing, the network especially for distributing or transporting natural gas nearby exist.In the difference of a regional work
Synergistic effect is established between network operator (peasant, manufacturer, public body), the production of biological methane contributes to each department in the energy
Aspect obtains the self-sufficient of bigger.
Many steps must be carried out between collecting biogas and producing biological methane (can compress or liquefied finished product)
Suddenly.
More particularly, before purpose is to detach processing of the carbon dioxide to generate the methane stream of purifying, it is necessary to many
Step.The first step is to compress the biogas of production and transportation at atmosheric pressure;The compression can be -normally-to pass through lubrication
Helical-lobe compressor obtains.Subsequent step is intended to isolate the corrosive component of biogas, these components are hydrogen sulfide and volatilization
Property organic compound (VOC).Technology used is typically pressure-variable adsorption (PSA) and captures on the activated carbon.Following step is
Carbon dioxide is detached, to finally subsequently provide methane using required purity with it.
Carbon dioxide is typically found in the pollutant in natural gas, it is often necessary to isolate it by natural gas.For this purpose,
Various technologies are used depending on each situation:In these techniques, membrane technology is especially effective when CO2 contents are high;Therefore it for
It detaches in biogas, more particularly the CO2 present in landfill gas is especially effective.
Many steps must be completed between biogas and biological methane production, biological methane is can to compress or liquid collecting
The final products of change.
More particularly, before processing intent is to detach methane stream of the carbon dioxide to generate purifying, many steps are needed.
The first step is to compress the biogas of production and transportation at atmosheric pressure;This compression can with-usually pass through lubricate screw compression
Machine obtains.Subsequent step is intended to the biogas of exfoliation corrosion component, these components are hydrogen sulfide and volatile organic compound
Object (VOC).Used technology is typically pressure-variable adsorption (PSA) and captures on the activated carbon.Following step is separation two
Carbonoxide, finally subsequently to provide methane using required purity to provide.
Carbon dioxide is typically found in the pollutant in natural gas, and usually it must be stripped.It adopts as the case may be
With various technologies:In these techniques, membrane technology is especially effective when CO2 contents are high;Therefore it is for detaching biogas, more
CO2 especially in landfill gas is especially effective.
Either use one or more mem stages, the gas separation membrane method for purified gases allow for it is low at
This production has the gas of required quality, while minimizing the loss of its value gas to be improved.Therefore, pure in biogas
In the case of change, the separation carried out is mainly CH4/CO2 separation, and it is super containing (depending on its purposes) to allow for production
85% CH4, the gas of preferably greater than 95% CH4, the gas of more preferably above 97.5% CH4 are crossed, while making residue gas
The loss of CH4 and purifying cost minimization, the electricity of purifying cost signal portion and the device of the gas for compressive films upstream in body
Power consumption is related.
A kind of known solution is related to using three stage film systems (Fig. 1), wherein the first stage through object 4 the
It is subjected to second of separation in three mem stages, is then mixed into being recycled through object 5 for second stage.Three stage system is no longer
Penetrating for compression first stage uses under object, and the residual product through object and phase III of second stage is recycled to film
The entrance of system.Relative to two benches membranous system, which improves methane production.
One key parameter of three stages construction is that the section of the first rank penetrates the pressure of object, this is the entrance pressure of phase III
Power.Therefore, two conflicting targets are mutually contradictory:
1. pressure minimum must be made to improve the efficiency of first stage;
2. must make pressure maximum needs membrane module number to be mounted to improve the efficiency of phase III or reduce.
In order to confirm the effect through object pressure of first stage, Fig. 2 show CH4 yields and standardize specific cost with
The variation through object pressure of first stage.
Fig. 2 shows if retaining every other parameter, the minimum bigger of pressure.
However, in order to be benefited in the maximal efficiency by the phase III, it is desirable to increase the entrance pressure in the stage, this can lead to
Mechanical compressor is crossed to carry out.
A solution according to the present invention is the gaseous state including at least methane and carbon dioxide for film infiltration processing
Equipment of the feeding flow 6 to generate the gaseous stream 12 rich in methane, the equipment include:
- the first film separation unit 1, can receive gaseous feed stream and generation first is rich carbonated through object
4 and first be rich in methane retention 7,
- the second film separation unit 2 can receive the first retention 7 and generate the second rich carbonated transmission
Object 5 and second is rich in the retention 8 of methane,
Gas-gas injector 11, the pressure that object 4 can be penetrated first are improved to 2-6 bars, more preferable 3-4 bars
Pressure, and
Third film separation unit 3 can receive compressed in injector first through object 4 and generate third and be rich in
The retention 9 and third of methane penetrate object 10 rich in CO2.
In appropriate circumstances, equipment according to the present invention can have one or more following characteristics:The equipment
Include the device for the part B of gaseous feed stream to be delivered to gas-gas injector, and gas-gas injector is
Using the part B of gaseous feed stream as the gas-gas injector of power gas (motive gas),
The equipment includes compressor, can will be carried in the pressure of the gaseous feed stream of the first film separation unit upstream
Up to more than 8 bars, more preferably larger than 13 bars of pressure,
The equipment includes the 4th film separation unit, can receive third through object and generate the 4th rich in methane
Retention and the 4th rich in CO2 penetrate object,
The equipment includes penetrating the device of object for swimming joint recycling third retention and second on the compressor,
The equipment includes penetrating the device of object for swimming joint the 4th retention of recycling and second on the compressor,
The equipment includes the device for penetrating object in device external discharge third,
The equipment includes the device for the 4th retention to be discharged in device external,
The having the same selective or different selectivity of the films of-three film separation units.
Another theme of the present invention is a kind of gaseous feed stream 6 that film permeates processing including at least methane and carbon dioxide
Method to generate the gaseous stream 12 rich in methane, uses equipment as defined herein and includes:
A) UF membrane gaseous feed stream is rich carbonated through object 4 to generate first in the first film separation unit 1
The first step for the retention 7 for being rich in methane with first,
B) the first retention of UF membrane 7 is rich carbonated through object 5 to generate second in the second film separation unit 2
The second step for the retention 8 for being rich in methane with second,
C) the step of being compressed to 2-6 bars of pressure through object 4 by first by gas-gas injector 11,
D) first compressed in UF membrane injector 11 in third film separation unit 3 is rich in through object 4 with generating third
The retention 9 and third of methane are rich in the third step through object 10 of CO2.
In appropriate circumstances, there can be following one or more following characteristics according to the method for the present invention:
Gas-gas injector 11 is using the part B of gaseous feed stream as power gas.
In the upstream of the first film separation unit 1, gaseous feed stream 6 is compressed to more than 8 bars, more preferably larger than 13 bars
Pressure.
The method includes UF membrane thirds to be rich in CO2 through object to generate the 4th retention and the 4th rich in methane
The four steps through object.
Third retention 9 and second is swum to joint recycling on the compressor through object 5.
4th retention and second are swum into joint recycling through object on the compressor.
For the present invention, gaseous feed stream be preferably derived from for example digester(-tor), installation for fermenting, waste disposal facilities or
The biogas of WTP (WTP=sewage treatment plants).
Apparatus and method according to the invention is improved to 2-6 bars of pressure, in other words by penetrating the pressure of object by first
It says, by making pressure is " mild " to improve so that lower the film surface product installed in the phase III, and therefore keeping constant production
Capital cost is reduced while amount, or improves the efficiency of apparatus/method according to the present invention.
Since the power gas that gas-gas injector uses is not deposited from the gaseous feed stream of first stage
In pollution risk.In addition, injector has the advantages that be free of moving parts.
Description of the drawings
Fig. 1 shows that a kind of known solution is related to using three stage film systems.
Fig. 2 shows CH4 yields and standardizes variation through object pressure of the specific cost with the first stage.
Fig. 3 shows that being handled for film infiltration for a solution according to the present invention includes at least methane and titanium dioxide
Equipment of the gaseous feed stream 6 of carbon to generate the gaseous stream 12 rich in methane.
Claims (15)
1. a kind of including at least the gaseous feed stream (6) of methane and carbon dioxide to generate rich in methane for film infiltration processing
The equipment of gaseous stream (12), including:
- the first film separation unit (1), can receive gaseous feed stream and generation first is rich carbonated through object (4)
The retention (7) for being rich in methane with first,
- the second film separation unit (2), can receive the first retention (7) and generation second is rich carbonated through object
(5) and second be rich in methane retention (8),
Gas-gas injector (11), the pressure that object (4) can be penetrated first are improved to 2-6 bars, more preferable 3-4 bars
Pressure, and
Third film separation unit (3) can receive compressed in injector first through object (4) and generate third richness
Retention (9) and third containing methane penetrate object (10) rich in CO2.
2. equipment according to claim 1, it is characterised in that the equipment include for by the part B of gaseous feed stream by first
Film separation unit is delivered to the device of gas-gas injector, and gas ejector is made using the part B of gaseous feed stream
For the injector of power gas.
3. according to the equipment of claims 1 or 2, it is characterised in that the equipment includes compressor, and the compressor can be
The pressure of gaseous feed stream is risen above 8 bars by one film separation unit upstream, more preferably greater than 13 bars of pressure.
4. equipment according to claim 3, it is characterised in that the equipment includes the 4th film separation unit, the 4th UF membrane
Unit can receive third and penetrate object rich in CO2 through the retention of object and generation the 4th rich in methane and the 4th.
5. equipment according to claim 3, it is characterised in that the equipment includes for trip joint recycling the on the compressor
The device of three retentions and the second transmission object.
6. equipment according to claim 4, it is characterised in that the equipment includes for trip joint recycling the on the compressor
The device of four retentions and the second transmission object.
7. equipment according to claim 3, it is characterised in that the equipment includes for penetrating object in device external discharge third
Device.
8. equipment according to claim 4, it is characterised in that the equipment includes for the 4th retention to be discharged in device external
Device.
9. equipment as claimed in one of claims 1-8, it is characterised in that the film of three film separation units has identical
Selectivity or different selectivity.
10. film infiltration processing is including at least the gaseous feed stream (6) of methane and carbon dioxide to generate the gaseous feed rich in methane
The method of (12) is flowed, the method is using the equipment as defined in any one of claim 1-9 and includes the following steps:
A) UF membrane gaseous feed stream is rich carbonated through object (4) to generate first in the first film separation unit (1)
The first step for the retention (7) for being rich in methane with first,
B) the first retention of UF membrane (7) is rich carbonated through object to generate second in the second film separation unit (2)
(5) and second rich in methane retention (8) second step,
C) the step of being compressed to 2-6 bars of pressure through object (4) by first by gas-gas injector (11),
D) it is rich to generate third through object (4) for first compressed in UF membrane injector (11) in third film separation unit (3)
The third step through object (10) of retention (9) and third containing methane rich in CO2.
11. method according to claim 10, it is characterised in that the gas-gas injector (11) is using gaseous feed stream
Part B is as power gas.
12. according to the method for claim 10 or 11, it is characterised in that in the upstream of the first film separation unit by gaseous feed stream
(6) it is compressed to more than 8 bars, more preferably greater than 13 bars of pressure.
13. method according to claim 12, it is characterised in that the method includes UF membrane third penetrants to generate the 4th
Retention and the 4th rich in methane are rich in the four steps through object of CO2.
14. method according to claim 12, it is characterised in that third retention (9) and second penetrates object (5) in compressor
Upstream joint recycling.
15. method according to claim 13, it is characterised in that the 4th retention and second joins through object in the upstream of compressor
Close recycling.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1751688A FR3063437B1 (en) | 2017-03-02 | 2017-03-02 | APPARATUS AND METHOD FOR MEMBRANE PERMEATION TREATMENT OF A GAS SUPPLY FLOW COMPRISING METHANE AND CARBON DIOXIDE |
FR1751688 | 2017-03-02 |
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CN108530251A true CN108530251A (en) | 2018-09-14 |
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CN201810170651.3A Pending CN108530251A (en) | 2017-03-02 | 2018-03-01 | Device and method for gaseous feed stream of the film infiltration processing comprising methane and carbon dioxide |
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US (1) | US20180250627A1 (en) |
EP (1) | EP3369473A1 (en) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111321022A (en) * | 2018-12-14 | 2020-06-23 | 乔治洛德方法研究和开发液化空气有限公司 | Apparatus and method for osmotically treating a gas stream through a membrane with an adjusted suction pressure of a second permeate |
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US11155760B2 (en) * | 2019-04-30 | 2021-10-26 | Honeywell International Inc. | Process for natural gas production |
FR3097450B1 (en) * | 2019-06-20 | 2021-11-19 | Air Liquide | Treatment of a methane stream comprising VOCs and carbon dioxide by combining an adsorption unit and a membrane separation unit |
FR3097774B1 (en) * | 2019-06-26 | 2021-05-28 | Air Liquide | Plant for the treatment of a flow of methane and carbon dioxide by means of a vane compressor and a membrane separation unit |
FR3112085B1 (en) * | 2020-07-03 | 2023-11-17 | Air Liquide | Use of a flow of carbon dioxide from the membrane separation of biogas to inert a means of storage of at least one agricultural commodity |
FR3120803A1 (en) * | 2021-03-22 | 2022-09-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Plant for treatment by membrane permeation of a biogas stream with a two-module membrane separation unit |
US11980846B1 (en) | 2023-08-18 | 2024-05-14 | Unconventional Gas Solutions, LLC | System and method for producing renewable natural gas from biogas |
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- 2018-03-01 CN CN201810170651.3A patent/CN108530251A/en active Pending
- 2018-03-02 US US15/910,241 patent/US20180250627A1/en not_active Abandoned
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EP2735355A1 (en) * | 2012-11-27 | 2014-05-28 | Technische Universität Wien | Permeator system for separating gas mixtures |
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Also Published As
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US20180250627A1 (en) | 2018-09-06 |
EP3369473A1 (en) | 2018-09-05 |
FR3063437A1 (en) | 2018-09-07 |
FR3063437B1 (en) | 2019-03-29 |
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